| 相关多普勒光学层析成像 |
| |
| 引用本文： | 黄良敏,丁志华,洪威,王川.相关多普勒光学层析成像[J].物理学报,2012,61(2):23401-023401. |
| |
| 作者姓名： | 黄良敏 丁志华 洪威 王川 |
| |
| 作者单位： | 浙江大学现代光学仪器国家重点实验室, 杭州 310027;浙江大学现代光学仪器国家重点实验室, 杭州 310027;浙江大学现代光学仪器国家重点实验室, 杭州 310027;浙江大学现代光学仪器国家重点实验室, 杭州 310027 |
| |
| 基金项目： | 国家自然科学基金(批准号: 60978037, 60878057)资助的课题. |
| |
| 摘 要： | 提出了基于互相关的多普勒OCT(correlated Doppler optical coherence tomography, CD-OCT)方法, 能够有效的抑制噪声, 实现低信噪比条件下的流速探测. 对CD-OCT算法进行了详细的推导, 分析了噪声的相关性对该算法结果的影响, 最后基于谱域和时域联合探测方法(joint spectral and time domain optical coherence tomography, STD-OCT)以及CD-OCT算法的对比实验证明了该算法能够进一步实现信噪比的提高, 使测量的结果更为稳定.
|
| 关 键 词： | 谱域多普勒相关层析成像 互相关 信噪比 |
| 收稿时间： | 2012-02-27 |
Correlated Doppler optical coherence tomography |
| |
| Huang Liang-Min,Ding Zhi-Hu,Hong Wei and Wang Chuan.Correlated Doppler optical coherence tomography[J].Acta Physica Sinica,2012,61(2):23401-023401. |
| |
| Authors: | Huang Liang-Min Ding Zhi-Hu Hong Wei and Wang Chuan |
| |
| Institution: | State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China;State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | A new method based cross-correlation technique (CD-OCT) is proposed to acquire and analyse the information about flow velocity with low signal-to-noise ratio(SNR) in spectral-domain optical coherence tomography(SD-OCT). We theoretically study the procedure of this method, and analyse the correlation between the noises by computer simulation and experiment. The Doppler flow images reconstructed by CD-OCT are compared with those reconstructed by Joint spectral and time-domain optical coherence tomography (STD-OCT). The results demonstrate that CD-OCT can significantly improve the SNR, thus rendering it suitable for the flow measurement in low SNR. |
| |
| Keywords: | spectral domain optical Doppler tomography cross-correlation signal-to-noise ratio |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《物理学报》浏览原始摘要信息 |
| 点击此处可从《物理学报》下载免费的PDF全文 |
|
